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Images related to natural hazards.
Examples of seismograms of different types of earthquakes and tremor (constant ground shaking) recorded in Hawai‘i.
Examples of seismograms of different types of earthquakes and tremor (constant ground shaking) recorded in Hawai‘i.
An American exchange participant views the former hospital in Amero where the entire first floor was buried by lahars from Nevado del Ruiz (the second floor is visible).
An American exchange participant views the former hospital in Amero where the entire first floor was buried by lahars from Nevado del Ruiz (the second floor is visible).
U.S. and Chilean scientists prepare for a research flight during the 2008 VDAP eruption response at Chaitén.
U.S. and Chilean scientists prepare for a research flight during the 2008 VDAP eruption response at Chaitén.
Michael Poland, Scientist-in-Charge of the Yellowstone Volcano Observatory.
Michael Poland, Scientist-in-Charge of the Yellowstone Volcano Observatory.
View of Mount Baker from the west. Summit area draped with aerial imagery from National Agriculture Imagery Program (NAIP) collected in September 2015. Digital topography from High-resolution digital elevation dataset for Mount Baker and vicinity, Washington, based on lidar surveys of 2015: U.S.
View of Mount Baker from the west. Summit area draped with aerial imagery from National Agriculture Imagery Program (NAIP) collected in September 2015. Digital topography from High-resolution digital elevation dataset for Mount Baker and vicinity, Washington, based on lidar surveys of 2015: U.S.
Table of ash fall severities based on accumulated thickness.
Table of ash fall severities based on accumulated thickness.
Collapsed roofs after severe ashfall from Galunggung Volcano, West Java, Indonesia.
Collapsed roofs after severe ashfall from Galunggung Volcano, West Java, Indonesia.
Block diagram showing subduction of the Juan de Fuca Plate beneath the North American Plate along the Cascadia Trench, which is the western edge of the Cascadia subduction zone. Oceanic crust forms by eruptions along the Juan de Fuca Ridge.
Block diagram showing subduction of the Juan de Fuca Plate beneath the North American Plate along the Cascadia Trench, which is the western edge of the Cascadia subduction zone. Oceanic crust forms by eruptions along the Juan de Fuca Ridge.
Mount Jefferson viewed from Highway 26, Oregon.
Mount Jefferson viewed from Highway 26, Oregon.
InSAR (Interferometric Synthetic Aperture Radar) is a technique for mapping subtle ground deformation using radar images from Earth-orbiting satellites. With its global coverage and all-weather imaging capability, InSAR has become an increasingly important technique for studying volcanoes in remote regions such as the Aleutian Islands.
InSAR (Interferometric Synthetic Aperture Radar) is a technique for mapping subtle ground deformation using radar images from Earth-orbiting satellites. With its global coverage and all-weather imaging capability, InSAR has become an increasingly important technique for studying volcanoes in remote regions such as the Aleutian Islands.
Join us July 25-29, 2016, for a 5-day educator workshop at Mount Rainier. The workshop features informative talks on Cascade volcanoes and volcanic processes, ideas for classroom activities, hikes into the field, and tips for organizing school field trips to visit the volcano. There is no charge for this workshop and camping is available to participants.
Join us July 25-29, 2016, for a 5-day educator workshop at Mount Rainier. The workshop features informative talks on Cascade volcanoes and volcanic processes, ideas for classroom activities, hikes into the field, and tips for organizing school field trips to visit the volcano. There is no charge for this workshop and camping is available to participants.
Early on the morning of May 18, 1980, the landslide swept into the upper North Fork Toutle River valley and came to rest within about 22 km of the volcano. The landslide deposit, however, was saturated with water, and contained snow and ice blocks from the volcano's former glaciers.
Early on the morning of May 18, 1980, the landslide swept into the upper North Fork Toutle River valley and came to rest within about 22 km of the volcano. The landslide deposit, however, was saturated with water, and contained snow and ice blocks from the volcano's former glaciers.
May is Volcano Preparedness Month in Washington State.
May is Volcano Preparedness Month in Washington State.
During the cleanup after the 18 August 1992 eruption of Mt Spurr volcano, Alaska. The population of Anchorage used mostly wet methods to clean up the ash, creating a peak water demand which resulted in water shortages and loss of pressure in some parts of the city due to bottlenecks in the distribution system.
During the cleanup after the 18 August 1992 eruption of Mt Spurr volcano, Alaska. The population of Anchorage used mostly wet methods to clean up the ash, creating a peak water demand which resulted in water shortages and loss of pressure in some parts of the city due to bottlenecks in the distribution system.
Ash buries cars and buildings after the 1984 eruption of Rabaul, Papua New Guinea.
Ash buries cars and buildings after the 1984 eruption of Rabaul, Papua New Guinea.
Featured speaker from Colombia discusses lahars at Orting, Washington, event.
Featured speaker from Colombia discusses lahars at Orting, Washington, event.
Mount Rainier 2018 Teacher Workshop
Mount Rainier 2018 Teacher Workshop
The USGS-Cascades Volcano Observatory opens its doors to the public on Saturday, May 12, for a one-day open house. Scientists will be on-hand from 10:00 am to 5:00 pm to share the results of their research and talk about volcano hazards. Hands-on activities and equipment demonstrations will be featured.
The USGS-Cascades Volcano Observatory opens its doors to the public on Saturday, May 12, for a one-day open house. Scientists will be on-hand from 10:00 am to 5:00 pm to share the results of their research and talk about volcano hazards. Hands-on activities and equipment demonstrations will be featured.
Sideromelane and tachylite shards collected 12 km from source at Mount Etna, 2002. The width of view is 1 mm
Sideromelane and tachylite shards collected 12 km from source at Mount Etna, 2002. The width of view is 1 mm
Aerial view of Mount St. Helens, taken from the southwest.
Aerial view of Mount St. Helens, taken from the southwest.